package servlet.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import oracle.net.aso.s;
import pojo.User;

/**
 * Servlet Filter implementation class ShopFilter
 */
public class ShopFilter implements Filter {

    /**
     * Default constructor. 
     */
    public ShopFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		// TODO Auto-generated method stub
		// place your code here
		User user=new User();
		HttpServletRequest hsRequest=(HttpServletRequest)request;
		HttpServletResponse hsResponse=(HttpServletResponse)response;
		user=(User) hsRequest.getSession().getAttribute("user");
		if(user!=null)
		{
			chain.doFilter(request, response);
		}
		else {
			hsResponse.sendRedirect("../login.jsp");
		}
		// pass the request along the filter chain
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
